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That was not the 'Cold Boot' I was expecting. Awesome. The paper is really nice and readable. TL;DR: Freezing the phone makes the RAM static and not clear on r
by SchizoDuckie 11y ago
That was not the 'Cold Boot' I was expecting. Awesome.
The paper is really nice and readable.
TL;DR: Freezing the phone makes the RAM static and not clear on reboot, giving you time to sideload their custom recovery image that iterates the ram and looks for AES encryption key patterns.
- Pxtl 11y agoAfter reading the article expecting a soft solution to causing a lock-up crash of the OS, I feel that your TL;DR needs to be clarified slightly: Actual freezing. Like, putting the phone in a freezer to create sub-zero temperatures.
- greggarious 11y agoHence "cold boot attack"
- deleted 11y ago[deleted]
- schoen 11y agoI worked on the original cold boot paper (Halderman et al.) and I understood "cold boot" as "removing power", not as "lowering temperature". (It's a warm boot if you reboot from software, and a cold boot if you reboot by removing power to the machine.) It's understandable that people would have assumed temperature was the reason for "cold" because we had lots of pictures of memory with ice crystals. Under many circumstances, the attack worked at room temperature; one main reason for using low temperatures was if you needed to physically move the RAM chips from one machine to another.
- baby 11y agoSo wait, freezing the ram makes it slower to fade? So that when you quick reboot the phone the ram is not erased? from https://www1.informatik.uni-erlangen.de/filepool/projects/frost/frost.pdf https://www1.informatik.uni-erlangen.de/filepool/projects/fr... > The remanence effect says that RAM contents fade away gradually over time, as slower as colder the RAM chips are.